Drill and pipe pulling machine



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April 19, 1932. v. PRAJER 1,855,116

April 19, 1932. v. PRAJE R 1,855,116

DRILL AND PIPE PULLING MACHINE Filed Nov. 10, 1928 4 Sheets-Sheet 2 April 19, 1932 v. PRAJEQR 1,855,] 16

DRILL AND PIPE PULLING MACHINE Fild Nov 10, 1928 4 Sheets-Sheet 5 ATTORNEY April 19, 1932.

eeeeeeeeeeee t 4 Patented Apr. 19, 1932 UNITED stares VACLAV PRAJER, OF 'GARDNERVILLE, INEVADA f DRILL AND PIPE PULLIIIG iMACI-IINE Application filed November 10, 1928. Serial No. 318,453.

This invention relates generally todrilling apparatus and has particular relation to means forpulling machine drills or bull picks, etc., out of holes in rock or ground, should the drills or picks become stuck or work hard; or for pulling pipes without injury to the latter.

Another object of the invention is the provision of a pulling apparatus which is simple in construction, may be quickly positioned for use, and by means of which drills or pipe may be pulled upward, either by turning the same, or directly upward without permitting the drill or pipe to turn.

With the above and other objects in view, the invention further includes the following novel features and details of construction, to

be hereinafter more 'fully described, illus trated in the accompanying drawings and pointed out in the appended claims.

In the drawings v Figure 1 is a vertical sectional view of a pulling apparatus constructed in accordance with the invention and shown in position for 4 use.

Figures 2 and 3 are sections taken respectively on the lines 2-2 and 33 of Figure 1.

Figure 4 is a fragmentary elevation showing a slightly different form of the invention.

Figure 5 is a vertical sectional view of the subject matter of Figure 4.

Figure 6 is a section on the line 6-6 of Figure 4.

Figure 7 is a detail top plan view of the sleeve.

Figure 8 is an elevation partly in section showing a modified form of the invention.

Figure 9 is a plan view of the center bearing member shown in Figure 8.

Figure 10 is a bottom plan view of the lower bearing member shown in Figure 8.

Figure 11 is a sectional view on the line 11-11 of Figure 8.

Figure 12 is a fragmentary elevation showing a further slightly modified form of the invention.

Referring to the drawings in detail wherein like characters of reference denote corresponding parts, the reference character 10 indicates a stand which is shown as cylindrical in shape and provided with a longitudinal bore having threads 11 therein. EX- tending downwardly from the stand are anchors 12 whose upper ends are received within recesses 13 provided in the stand,

while threaded studs 14 serve to hold these 'anchorsinplace. Reinforcing webs 15 are provided abovethe anchors As shown in Figure .1 of the drawings, the anchors are positioned within the ground around the hole 16 from which the drill or pipe is'to be pulled.

Positioned within the stand 10 is a sleeve 17 and this sleeve is externally threadedfias shown at 18 for engagement with the threads '11, so that when the sleeve is rotated it will be moved longitudinally of the stand. The sleeve 17 is formed with a circumferentially and laterally disposed arcuate opening 19 and mounted within thisopening for swinging movement upon a hinge pin 20 is a clampingmemb'er 21 and this has thereon a headed member 21 forming a finger knob for the convenient opening of the same. The inner faceof this "clamping member is provided with gripping elements 22 and is held in gripping position by means of pins 23. These pins extend downwardly through the headl24 upon the upper end of the sleeve and Within which the opening 19 is located. A-

binding' screw 25 extends radially inward through the head. The head is also provided with radially disposed openings 26 for the reception oifoperating bars 27 the latter being preferably attached to the head through the medium of chains 28.

In the use of the invention, the stand is placed over the hole. 16 with the anchors 12 embedded in the ground, the clamp 21 first being released and swung outward and the screw 25 screwed outward, "This permits the, drill '29, and its collar to pass through the bore." The clamp 21 is then closed and held in closed position by the pins 23, after which the bindingscrew 25 is adjusted to engage the drill. The bars 27 after being inserted Within the openings 26 are utilized to rotate the sleeve 17 whereupon the drill will be pulled upward. In Figures 4: 5, and 6, the drill 26 may be pulled without rotating said drill. For this purpose, the head 24 of the sleeve 17 has mounted thereon a bearing member 31 which is provided with concentric grooves 32 in its upper face. A central or intermediate bearing member 33 is mounted upon the bearing member 31 and is provided with concentric ribs which are received within thegrooves 32. The bearing member 33 is formed of semicircular sections as shown in Figure 9 and its upper face is provided with concentric grooves 34 which receive similarly arranged ribs 35 provided in an upper bearing member 36. This last referred to "bearing memher is provided with radially disposed grooves 37 in its upper face and these grooves are adapted. to receive ears 38 which extend from semi-circular gripping members 39. These gripping members are clamped about the drill 26 bymeans of clamping bolts 40.

By the construction just described, when the sleeve 17 is rotated through the medium of the bars 27 ,the gripping members 39 which are engaged with the drill will not rotate due to the relative movement of the bearing members 31 and 33 so that the drill will be pulled directly upward.

In the form of the invention shown in Figure 8, the head 24 of the sleeve 17 is provided with radially disposed recesses 41. These recesses communicate with thebore of the sleeve 17 and are adapted to receive ribs 42 which extend longitudinally of segmental gripping members 43. These gripping members are adapted to engage opposite sides of a pipe 44 to be pulled and are held in position by means of set screws 45. The gripping members 43 thus prevent the set screws from injuring the pipe. In this form of the invention, the bottom bearing member 31a is provided with diametrically disposed notches 46which receive the upper ends of the top bearing member and the bottom beargroove 48 which receives theears 38 of the clamping member 39 which is adapted to grip the drill 26. 7 By. rotating the sleeve 27 in the manner previously described, the drill 26 will be rotated and drawnupward.

It is preferable'with this form of the invention that the threads of the sleeve and the stand be reversed.

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right isherein reserved to make such changes as properly fall within the scope of the appended claims. 7

Having described the invention what is I claimed is: '7

1. In an apparatus of the kind described, an anchored stand having a threaded longitudinal bore, a sleeve adjustably engaging the threaded bore and having an openingextending for a distance circumferentially thereof and laterally, a clamping member coextensive with the opening and pivoted at one end for swinging movement, gripping means on the inner side of said member to confront and bite a drilling tool when within the sleeve, means for holding the said clamping member within the'opening, and a binding elementmounted in the sleeve diametrically opposite the clamping member to coact with the gripping means for forcing these in biting engagement with the drilling tool. 7

2. In an apparatusof the kind described, an anchored stand having a threaded longitudinal bore, a sleeve adjustably'engaging the threaded bore and having an opening extending for a distance circumferentially thereof and laterally, a clamping member coextensive with the opening and pivoted at one end for swingingmovement, gripping means on the inner side of said memberto confront and bite a drilling tool when within the sleeve, means for holding the said clamping member within the opening, and'a binding element mounted in the sleeve diametrically opposite the clamping member to coact with the gripping means for forcing these in biting engagement with the drilling tool, the said sleeve in its upper portion being formed with a plurality of radially disposed sockets and operating bars interchangeably engaging in said sockets.

In testimony whereof I affix my signature.

' VACLAV PRAJER. 

